MESON Chess Problem Database

Problem Display
PID: 18917 (8/8/4p3/4Q1p1/6r1/5k1P/4N2P/4KB1b w - - 0 1)

Wertheim, David R

1st Place, Match: Israel - Switzerland, 1959

8/8/4p3/4Q1p1/6r1/5k1P/4N2P/4KB1b

#2

6 + 5

102 Probleemblad 1976
3841 The Art of Israeli Chess Composition 1983
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Sxg1#
      • 2.Sd4#
    • 1...Rg2
      • 2.Sd4#
    • 1...Rg3
      • 2.Sd4#
    • 1...Ra4
      • 2.Sg1#
    • 1...Rb4
      • 2.Sg1#
    • 1...Rc4
      • 2.Sg1#
    • 1...Rd4
      • 2.Sg1#
      • 2.Sxd4#
    • 1...Re4
      • 2.Qg3#
    • 1...Rf4
      • 2.Sg1#
    • 1...Rh4
      • 2.Sg1#
    • 1...Bg2
      • 2.Sg1#
  • Tries
    • 1.Bg2+?
      • 1...Rxg2
        • 2.Sd4#
      • 1...Bxg2
        • 2.Sg1#
      • 1...Kxg2!
    • 1.Qd4?
      • threat
        • 2.Qd3#
      • 1...Re4
        • 2.Qf2#
      • 1...Rxd4!
  • Keys
    • 1.Sc3!
      • 1...Re4+
        • 2.Qxe4#
      • 1...Rg1
        • 2.Qe4#
      • 1...Rg2
        • 2.Qe4#
      • 1...Rg3
        • 2.Qxg3#
        • 2.Qe4#
      • 1...Ra4
        • 2.Qg3#
      • 1...Rb4
        • 2.Qg3#
      • 1...Rc4
        • 2.Qg3#
      • 1...Rd4
        • 2.Qg3#
      • 1...Rf4
        • 2.Qe2#
      • 1...Rh4
        • 2.Qg3#
      • 1...Bg2
        • 2.Be2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 8
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::S(C)
    • R(c);N_GUARD,P_PINS(C),SBLOCK::QAR1(F)
    • B(a);S_CUTR(c)::S(C)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • R(c);SBLOCK,XB(B)::S(C)
        • B(a);SBLOCK,XB(B)::S(C)
      • Refutation
        • K(b);S_FLIGHT,XB(B)
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • R(c);P_PINS(C),SBLOCK::QAR1(F)
      • Refutation
        • R(c);XQ(F)
  • Actual
    • S(C);
    • Vars
      • R(c);CHECK,N_GUARD::QAB1(F),XR(c)
      • R(c);N_GUARD,P_PINB(B)::QAB1(F)
      • R(c);N_GUARD::QAB1(F)
      • R(c);N_GUARD::QAR1(F)
      • R(c);SBLOCK::QAB1(F)
      • B(a);SBLOCK::B(B)
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